Pointless Circuits

Programming, Electronics and Breaking Things

May 24, 2020 - Comments - RF electronics

NanoVNA 2 - First Impressions

This week, after some Corona-induced delays, I finally found my NanoVNA 2 in my post box. Now, for everyone that is not familiar with this family of devices, the NanoVNA-Series are tiny vector network analyzers for an affordable price. While I never owned the first version, I heard a lot of good about them, and when version 2 with an increased frequency range came on the market, I ordered one for myself on Tindie.

Nov 16, 2017 - Comments - about

Ping Latency: 203 Days

It happened again, Pointless Circuits disappeared from the interwebs. Again the server was gone without prior notice. Then life happened and it took more than six months for us to get the site back online. We’re sorry for any inconvenience this caused. Pointless Circuits is now hosted on a more costly German VPS. We hope that reduces the risk of similar outtakes in the future.

Jul 16, 2016 - Comments - about

Pointless Circuits is back online!

Yesterday we found out that Pointless Circuits had been down for 15 days. It seems we trusted our hosting provider too much. Everything was fine until suddenly our accounts were gone, as were the servers. We’ve set up a new server (with a new hosting provider!) and will keep working to make sure such a major outtake won’t happen again.

Jan 11, 2016 - Comments - Chromebook SD card hard drive electronics

Soldering Exercise: Hardwiring a microSD card

For a very cheap hard drive extension, I decided to fit a 32gb microSD card into my Acer C720(p) Chromebook. As there exists no microSD to SD adapter short enough to not stick out of the Chromebook’s card slot, the only option I had was hardwiring the card. (I could obviously have bought a bigger M.2 SSD, but that would have been more expensive and well, where’s the fun in that?)

Sep 19, 2015 - Comments - AVR WebDev air dehumidifier

An online AVR bootloader generator

When finishing the air dehumidifier project, I first came into contact with FastBoot, a serial bootloader for AVR controllers with lots of cool features. It was quite a hassle to compile, so I set out to create an online tool to do just that. For anyone who doesn’t want worry much when in need of a firmware to program AVRs over uart: Meet fastboot-generator!